A CTP and TFT laminated liquid crystal module and a manufacturing process thereof

By fabricating two ITO pattern layers on the working surface of a glass substrate and then screen printing silver lines and insulating oil on the same surface, the problems of complex process flow and low yield in the existing technology are solved, thereby improving product yield and production efficiency.

CN116909047BActive Publication Date: 2026-04-07JIANGMEN YEEBO SEMICON
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Patent Information

Application Number
CN202310930234.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-26
Publication Date
2026-04-07
Estimated Expiration
2043-07-26

AI Technical Summary

Technical Problem

The existing manufacturing process for CTP and TFT bonded liquid crystal modules is complex, making it difficult to control the product yield. The silver wire bonding sites are distributed on opposite sides of the glass, requiring multiple bonding cycles, and the exposed silver wires on the other side are easily damaged.

Method used

Two ITO pattern layers are fabricated on the working surface of the glass substrate, and silver wire screen printing and insulating oil screen printing are performed on the same surface, eliminating the need for flipping and using the insulating layer to protect the silver wires, thus simplifying the process.

Benefits of technology

It improved the product yield, simplified the process, reduced the risk of silver wire damage, and lowered production costs and production cycle.

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Abstract

This invention provides a CTP and TFT bonded liquid crystal module and its manufacturing process, comprising: S10: forming a first ITO pattern layer on the working surface of a glass substrate; S20: forming an insulating layer on the working surface of the glass substrate, wherein a screen printing space is reserved between the insulating layer and the first ITO pattern layer; S30: forming a second ITO pattern layer on the insulating layer; S40: screen printing silver lines and insulating oil on the first ITO pattern layer and the second ITO pattern layer on the working surface of the glass substrate; S50: bonding the working surface of the glass substrate to a glass cover plate with optical adhesive to obtain a CTP and TFT bonded liquid crystal module. This application innovatively forms two ITO pattern layers on the same surface, which, after bonding with the glass cover plate, can protect all silver lines, effectively improving the yield rate. The silver line screen printing and insulating oil screen printing processes only require uniform operation on the working surface, eliminating the need for flipping, effectively simplifying the process flow.
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